通过键软化调控光解的量子控制
Quantum Control of Photodissociation via Manipulation of Bond Softening
摘要：
我们提出了一种方法来控制光解离通过操纵键软化机制发生在强成形激光场，通过改变啁啾的符号和幅度的超短激光脉冲。在强场（795 nm，10^12 - 10^13 W/cm ^2）下H2+的光解离实验中证实了键软化的操纵，相对于负啁啾和变换限制脉冲，正啁啾脉冲的解离显著增加。测量的动能释放和角分布用于量化解离的控制程度。控制机制是由于相互作用的动态排列和啁啾光诱导电位曲线。
英文摘要：
We present a method to control photodissociation by manipulating the bond softening mechanism occurring in strong shaped laser fields, by varying the chirp sign and magnitude of an ultra-short laser pulse. Manipulation of bond-softening is experimentally demonstrated for strong field (795 nm, 10^12 - 10^13 W/cm^2) photodissociation of H2+, exhibiting substantial increase of dissociation by positively chirped pulses with respect to both negatively chirped and transform limited pulses. The measured kinetic energy release and angular distributions are used to quantify the degree of control of dissociation. The control mechanism is attributed to the interplay of dynamic alignment and chirped light induced potential curves.
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